-er -up ddd dde ddi ddo ddp ddr dds ddu de- ded dee dei deo dep der des deu di- did die dii dio dip dir dis diu dod doe doi doo dop dor dos dou dpd dpe dpi dpo dpp dpr dps dpu drd dre dri dro drp drr drs dru dsd dse dsi dso dsp dsr dss dsu dud due dui duo dup dur dus ed- edd ede edi edo edp edr eds edu eed eee eeo eep eer ees eid eie eii eio eip eir eis eiu eo- eod eoe eoi eoo eop eor eos eou ep- epd epe epi epo epp epr eps epu erd ere eri ero erp err ers eru es- esd ese esi eso esp esr ess esu eu- eud eue eui eup eur eus i-d idd ide idi ido idp idr ids idu ie- ied iee iei iep ier ies iid iie iii iio iip iir iis iiu io- iod ioe ioi ioo iop ior ios iou ipd ipe ipi ipo ipp ipr ips ipu ir- ird ire iri iro irp irr irs iru is- isd ise isi iso isp isr iss isu iu- iud iue iui iup iur ius o-i odd ode odi odo odp odr ods odu oed oee oei oeo oep oer oes oid oie oii oio oip oir ois oiu oo- ood ooi ooo oop oor oos op- opd ope opi opo opp opr ops or- ord ore ori oro orp orr ors oru os- osd ose osi oso osp osr oss osu ou- oud oue oui ouo oup our ous p-p pdd pde pdi pdo pdp pdr pds pdu ped pee pei peo pep per pes peu pid pie pii pio pip pir pis piu pod poe poi poo pop por pos pou ppd ppe ppi ppo ppp ppr pps ppu prd pre pri pro prp prr prs pru ps- psd pse psi pso psp psr pss psu pud pue pui pup pur pus puu rdd rde rdi rdo rdp rdr rds rdu re- red ree rei reo rep rer res reu rid rie rii rio rip rir ris rod roe roi roo rop ror ros rou rpd rpe rpi rpo rpp rpr rps rpu rrd rri rrp rrr rrs rru rsd rse rsi rso rsp rsr rss rsu rud rue rui ruo rup rur rus ruu sdd sde sdi sdo sdp sdr sds sdu se- sed see sei seo sep ser ses seu sid sie sii sio sip sir sis siu sod soe soi soo sop sor sos sou spd spe spi spo spp spr sps spu sr- srd sre sri sro srp srr srs ss- ssd sse ssi sso ssp ssr sss ssu sud sue sui suo sup sur sus suu udd ude udi udo udp udr uds udu ued uee uei uep uer ues uid uie uii uio uip uir uis uiu uod uoe uoo uop uor uos up- upd upe upi upo upp upr ups upu ur- urd ure uri uro urp urr urs uru usd use usi uso usp usr uss usu uue uur uus uuu